Safe and secure payments using Abraa safe trade systems Product Specification
| Henan Xin Chen Imp & Exp Co. Ltd | |
| New | |
| YES |
Product Descriptions
1. Square Kelly (Hexagonal Kelly, Square Kelly)
2. Material: AISI 4145H alloy steel
3. Standard: API Spec.7 and SY/T6509
4. It is formed by hot forged and fully heat-treated by intermediate frequency induction heat treatment or 20m horizontal optical resistance furnace to gain high physical prosphated,copperized or cold worked .
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